Digital Commons Network^™

Community And Household Management Strategies For Water Supply And Treatment In Rural And Peri-Urban Areas In The Developing World, Ryan William Schweitzer

USF Tampa Graduate Theses and Dissertations

Eighty percent of the 780 million people worldwide that access water from an unimproved source live in rural areas. In rural areas, water systems are often managed by community based organizations and many of these systems do not provide service at the designed levels. The Sustainability Analysis Tool developed in Chapter 2 can inform decision making, characterize specific needs of rural communities in the management of their water systems, and identify weaknesses in training regimes or support mechanisms. The framework was tested on 61 statistically representative geographically stratified sample communities with rural water systems in the Dominican Republic. The results …

Crossing Cultural Boundaries: Explorations In Multilingual Teaching And Learning, Patriann Smith

USF Tampa Graduate Theses and Dissertations

A transdisciplinary notion of learning considers what is between, above, and beyond the disciplines. Adherence to such a perspective warrants examination of any research endeavor from multiple entry points and from openness to the changing nature and infinity of knowledge. In this dissertation, "Crossing Cultural Boundaries: Explorations in Multilingual Teaching and Learning," I approached the study of language and literacy teaching and learning across multilingual and multicultural contexts via an optional dissertation process that required completion of multiple studies. This dissertation option allowed me three entry points: (a) an understanding of literacy and language policy in relation to language learners …

From Limited-English-Proficient To Educator: Perspectives On Three Spanish-English Biliteracy Journeys, Elizabeth Visedo

USF Tampa Graduate Theses and Dissertations

The purpose of this multicase study was to describe and explain the perceptions of three Spanish-English culturally and linguistically diverse (CLD) high achievers on their biliteracy journeys to become educators in the United States (U.S.), by answering: What elements constitute the perspectives of three L1-Spanish/L2-English CLD high achievers on the relevance of their biliteracy experience in order to become educators in the U.S.?; What factors do these three L1-Spanish/L2-English CLD high achievers perceive as key to describe their biliteracy experience?; What relevance, if any, do these three L1-Spanish/L2-English CLD high achievers perceive their biliteracy experience had for them to become …

Cause-Related Controversy: An Analysis Of Corporate Sponsor Response To The Susan G. Komen/Planned Parenthood Crisis, Christina Maria Cameron

USF Tampa Graduate Theses and Dissertations

ABSTRACT

This qualitative study advances crisis communication and relationship management application and theory by examining the crisis response strategies used by corporations during a time of crisis involving a nonprofit partner. A qualitative content analysis was performed on the Facebook pages of 57 companies that were corporate partners of Susan G. Komen in early 2012. Nineteen companies responded using their Facebook accounts during two crisis periods studied. The researcher argues that consideration must be given to additional contingent factors beyond those proposed by situational crisis communication theory. Contingent variables related to the corporations' relationship with the charity, including level of …

Biomechanical Comparison Of Titanium And Cobalt Chromium Pedicle Screw Rods In An Unstable Cadaveric Lumbar Spine, James Doulgeris

USF Tampa Graduate Theses and Dissertations

Pedicle screw-rod instrumentation is considered a standard treatment for spinal instability, and titanium is the most common material for this application. Cobalt-chromium has several advantages over titanium and is generating interest in orthopedic practice. The aim of this study was to compare titanium versus cobalt-chromium rods in posterior fusion, with and without transverse connectors, through in vitro biomechanical testing and determine the optimal configuration.

Six cadaveric lumbar spines (L1-S1) were used. Posterior and middle column injuries were simulated at L3-L5 and different pedicle screw constructs were implanted. Specimens were subjected to flexibility tests and range of motion, intradiscal pressure and …

Examining The Effectiveness Of Intensive Language Action Therapy In Individuals With Nonfluent Aphasia, Rachel A. Goff

USF Tampa Graduate Theses and Dissertations

Abstract

Background: Individuals with nonfluent aphasia may have significant difficulties with functional spoken communication tasks in their daily life. Aphasia treatment held in a group setting may provide an enriched communicative context wherein the requirements of spoken language are similar to those within functional day-to-day communicative situations. Thus engaging in a spoken language activity in a group setting may directly target generalization of trained skills to those required in real-life, social communication situations. The present study is concerned with an aphasia group treatment that requires focused practice of spoken language during a social-functional communication task. Intensive Language Action Therapy (ILAT) …

Counselor Discomfort With Sexual Issues And Supervisory Role, Barbara Lofrisco

USF Tampa Graduate Theses and Dissertations

ABSTRACT

Sexual issues are common among the general population; therefore it is likely that clients suffer with them whether or not they are presenting issues. Because unresolved sexual issues may contribute to harm, counselors have an ethical obligation to ensure these issues are addressed during therapy. Yet, many fail to do so for a variety of reasons. Because clinical supervisors are in a unique position to nurture and mentor novice counselors, their influence is salient to this issue.

Although some research has been done to address this issue, results are inconclusive and somewhat contradictory. This study attempts to fill in …

Understanding Pedestrian And Bicyclist Compliance And Safety Impacts Of Different Walk Modes At Signalized Intersections For A Livable Community, Jacob Allen Mirabella

USF Tampa Graduate Theses and Dissertations

With increasing energy costs as well as rampant congestion in major U.S. cities, the popularity of walk and bike mode choices have increased in recent years. Thus, the obtainment of a comprehensive knowledge of pedestrian and bicyclist behaviors is of great importance.

The National Highway Traffic Safety Administration estimates that 11.1%#37; of pedestrian fatalities and 18.5%#37; of bicyclist fatalities in the U.S. occurred in Florida in 2011, which accounts for just 6.1%#37; of the nation's population. Additionally, intersections are hotspots for vehicle-pedestrian conflicts, which is confirmed by the Federal Highway Administration's estimate that nearly one in five pedestrian fatalities occur …

A Polarizable And Transferable Carbon Dioxide Potential For Materials Simulation, Ashley Lynn Mullen

USF Tampa Graduate Theses and Dissertations

Intermolecular potential energy functions for CO₂ have been developed from first principles for use in heterogeneous systems, including one with explicit polarization. The intermolecular potentials have been expressed in a transferable form and parameterized from nearly exact electronic structure calculations. Models with and without explicit many-body polarization effects, known to be important in simulation of interfacial processes, are constructed. The models have been validated on pressure-density isotherms of bulk CO₂ and adsorption in three metal-organic framework (MOF) materials. The present models appear to offer advantages over high quality fluid/liquid state potentials in describing CO₂ interactions in interfacial …

Assessing Appropriate Technology Handwashing Stations In Mali, West Africa, Colleen Claire Naughton

USF Tampa Graduate Theses and Dissertations

Proper hand hygiene is the most effective and efficient method to prevent over 1.3 million deaths annually from diarrheal disease and Acute Respiratory Infections (ARIs). Hand hygiene is also indispensable in achieving the fourth Millennium Development Goal (MDG) to reduce the childhood mortality rate by 2/3rds between 1990 and 2015. Handwashing has been found in a systematic review of studies to reduce diarrhea by 47%#37; and is, thus, capable of preventing a million deaths (Curtis et. al., 2003). Despite this evidence, hand washing rates remain seriously low in the developing world (Scott et al., 2008).

This study developed and implemented …

Spatial Distribution Of Nitrogen Oxides, Benzene, Toluene, Ethylbenzene, And Xylenes In Hillsborough County, Florida: An Investigation Of Impacts Of Urban Forests On Ambient Concentrations Of Air Pollutants Associated With Traffic, Jill Sears

USF Tampa Graduate Theses and Dissertations

Urban air pollution is responsible for high levels of morbidity and mortality in exposed populations due to its effects on cardiovascular and respiratory function. Transportation-related air pollutants account for the majority of harmful air pollution in urban areas. Forests are known to reduce air pollution through their ability to facilitate dry deposition and atmospheric gas exchange. This work characterizes the interactions between transportation air pollutants and urban forests in Hillsborough County, Florida. A highly spatially resolved passive air sampling campaign was conducted to characterize local concentrations of nitrogen oxides, benzene, toluene, ethylbenzene, and xylenes (BTEX) in Hillsborough County, Florida. Sampling …

The Relationship Between Attitudes And Perspectives Of American Sign Language University Students Towards Deaf People, Beth Lilessie Cagle Brightman

USF Tampa Graduate Theses and Dissertations

N/A

The Perspectives Of Graduate Students With Visual Disabilities: A Heuristic Case Study, Luis Perez

USF Tampa Graduate Theses and Dissertations

The concept of liminality describes the experiences of individuals who live "between and betwixt" as a result of their indeterminate status in society. This concept seems appropriate to describe the experiences of people who live with vision loss, because we simultaneously belong to two social or cultural groups. On the one hand we must navigate the mainstream society in which we live day to day, which we are often able to do with the vision we have left. On the other hand, our disability sets us apart from that mainstream society. This idea of living in "between and betwixt" the …

Framing Colombian Women's Beliefs, Values And Attitude Towards Sex And Sexual High-Risk Behaviors, Rosa Ore

USF Tampa Graduate Theses and Dissertations

Hispanic immigrants constitute the largest and fastest growing groups of minorities in the United States. According to the 2010 Census, there are 50.5 million Hispanics in the United States, making up 16.3% of the total population (Passel, Cohn & Lopez, 2011). Furthermore, the state of Florida is home to 4,223,806 Hispanics (U.S. Census Bureau, 2010). Because the Hispanic population continues to grow, it is important to study their sexual health behaviors because diseases linked to risky sexual behaviors account for approximately 20,000 U.S. deaths each year, and are linked to a number of adverse reproductive outcomes (Abraido-Lanza, Chao, & Florez, …

Light-Environment Controls And Basal Resource Use Of Planktonic And Benthic Primary Production, Kara Radabaugh

USF Tampa Graduate Theses and Dissertations

Consumers in marine and estuarine environments have a strong reliance on planktonic and benthic primary production. These two basal resources form the foundation of aquatic food webs, yet the abundance of phytoplankton and benthic algae are frequently inversely related due to competition for light and nutrients. As a result, optimal habitats for benthic and planktonic consumers vary spatially and temporally. To investigate these trends, three studies were conducted focusing on light attenuation and basal resources in a bay, river, and on a continental shelf.

δ¹³C and δ¹⁵N stable isotopes can be used as endogenous tracers to …

Navigation And Immersion Of The American Identity In A Foreign Culture To Emergence As A Culturally Relative Ambassador, Lee H. Rosen

USF Tampa Graduate Theses and Dissertations

Abstract

Globalization is forcing many American college students to re-evaluate their perspective on foreign travel. If they are offered an opportunity to improve their cultural relativity skill set by immersing themselves into a new culture, the more astute students might choose to embark on that journey especially if it would result in resume enhancement. This paper focuses upon a group of twelve community college students' cross-cultural experiences, navigation techniques, and adaptation methods as student interns teaching conversational English in Changchun, China for a period of nine to thirteen weeks in spring 2011. Several areas of interest emerged from their experiences …

Sirt1 Regulation Of The Heat Shock Response In An Hsf1-Dependent Manner And The Impact Of Caloric Restriction, Rachel Rene Raynes

USF Tampa Graduate Theses and Dissertations

The heat shock response (HSR) is the cell's molecular reaction to protein damaging stress and is critical in the management of denatured proteins. Activation of HSF1, the master transcriptional regulator of the HSR, results in the induction of molecular chaperones called heat shock proteins (HSPs). Transcription of hsp genes is promoted by the hyperphosphorylation of HSF1, while the attenuation of the HSR is regulated by a dual mechanism involving negative feedback inhibition from HSPs and acetylation at a critical lysine residue within the DNA binding domain of HSF1, which results in a loss of affinity for DNA. SIRT1 is a …

Non-Equilibrium Melting And Sublimation Of Graphene Simulated With Two Interatomic Potentials, Brad Steele

USF Tampa Graduate Theses and Dissertations

The mechanisms of the sublimation of graphene at zero pressure and the condensation of carbon vapor is investigated by molecular dynamics (MD) simulations. The interatomic interactions are described by the Reactive Empirical Bond Order potential (REBO). It is found that graphene sublimates at a temperature of 5,200 K. At the onset of sublimation, defects that contain several pentagons and heptagons are formed, that are shown to evolve from double vacancies and stone wales defects. These defects consisting of pentagons and heptagons act as nucleation sites for the gaseous phase. The influence of the interatomic interactions on the sublimation process are …

"When You Tell Them, Your Secret Is Out There": Experiences Of Sexuality And Intimacy Among Hiv Positive Black Women, Mackenzie Rae Tewell

USF Tampa Graduate Theses and Dissertations

HIV/AIDS infections disproportionately impact African Americans within the United States. In 2010, black Americans made up 12 percent of the United States population, yet accounted for 44 percent of new HIV/AIDS infections (Kaiser Family Foundation 2013). The majority of black women (85 percent) are infected with the virus through heterosexual contact, meaning it is critical examine their sexual lives in order to gain insight into this infection within this population (CDC 2011b). Through semi-structured interviews at a Tampa, Florida AIDS service organization, this study presents the experiences of sexuality and intimacy among HIV positive black women. Results demonstrate that HIV …

The Effect Of Visual Search And Audio-Visual Entrainment On Episodic Memory, Holly Anne Westfall

USF Tampa Graduate Theses and Dissertations

Previous research suggests that larger context effects are observed when participants are required to search a scene in order to find the to-be-remembered stimuli. Similarly, animal research on brain oscillations has shown theta wave activation when animals are searching their environment. These theta wave oscillations are positively correlated with learning. However, theta activation can also occur in response to sensory stimulation, for example, auditory stimulation with binaural beats or visual stimulation with a checkerboard pattern reversal. The results of several studies suggest that while a visual search task seems to reliably improve free recall performance, the effects of passive sensory …

Predicting Academic Outcomes For Third Grade Students: Examining The Reading Achievement Of Diverse Students Using The Diagnostic Lens Of The Dynamic Indicators Of Basic Early Literacy Skills, Zhivago Trevino Adderley

USF Tampa Graduate Theses and Dissertations

Despite the billions of dollars spent in the last forty years, America's efforts toward closing the achievement gaps among diverse learners and their receptive counterparts have not been realized. Limitations noted in previous research discussed the need to examine the unique contributions of diverse learner variables as a way of determining their specific academic needs. The purpose of this study was to examine the intra- and inter-group growth trajectories of two diverse student groups (English Language Learners and Students with Specific Learning Disabilities) on reading achievement. The study employed a longitudinal, quasi-experimental research design utilizing archival data from 26,947 students' …

Comparative Political Corruption In The United States: The Florida Perspective, Andrew Jonathon Wilson

USF Tampa Graduate Theses and Dissertations

Political corruption is a cancer - a malignant phenomenon that affects every political system and every person in the world. Corruption undermines the very fabric of society and the faith of people in their government. It makes goods more expensive, stymies development in developing nations, and it makes both the United States and the world a more dangerous place. Because of its negative effects and universality, corruption should be studied. Its study leads to greater understanding, the discovery of effective approaches to prevention, and restored faith in political systems. Its study also illuminates and breaks down barriers to effective government …

The Effect Of Hostile And Benevolent Sexism On Women's Cardiovascular Reactivity To And Recovery From A Laboratory Stressor, Kaleena Dennielle Burgess

USF Tampa Graduate Theses and Dissertations

Hostile sexism is the antipathetic expression of sexism, in which men are antagonistic towards women who threaten their superiority. Benevolent sexism is the patriarchal expression of sexism, where men express protective, yet restrictive, attitudes towards women. Both forms of sexism originate from the view that women are inferior, frail, and only suited for nurturing or domestic responsibilities. Benevolent sexism may be more harmful to women because coping is thwarted by observers' underestimation of its effects (Bosson, Pinel, & Vandello, 2009). The present study aimed to examine women's responses to and recovery from hostile and benevolent sexism utilizing measures of cardiovascular …

Middle And High School Predictors Of Off-Track Status In Early Warning Systems, Amber Brundage

USF Tampa Graduate Theses and Dissertations

It is important to identify students at-risk for school non-completion as early as possible. Research has demonstrated that data sources such as teacher nomination and individual demographic characteristics are less accurate identification methods of students who are at-risk for not graduating on-time. Instead, the use of early warning systems (EWS) based upon research validated indicators that reliably identify students who are Off-track, or at-risk for not graduating on-time, has been a promising approach. Questions remain though about the relationship of Off-track Status at an earlier time point to Off-track Status at a later time point as well as the relationship …

Variance In Faking In High-Stakes Personality Assessment As An Indication Of Job Knowledge, Timothy Ryan Dullaghan

USF Tampa Graduate Theses and Dissertations

The purpose of this study was to evaluate whether the personality trait elevation between honest and applicant contexts that has been widely seen throughout the personality and selection research is merely universal, blatant trait elevation, or whether something else is underlying this faking behavior. By obtaining both honest and applicant context personality responses in which respondents were provided with focal job knowledge, this study determined that while there is near-universal trait elevation across seven personality traits, there is, in fact, some trait differentiation between jobs. As such, this study provided some evidence of knowledgeable faking, defined as distortion of personality …

The Spectrophotometric Analysis Of Lead Carbonate Complexation And Carbonate Saturation States In Seawater, Regina Anita Easley

USF Tampa Graduate Theses and Dissertations

The carbon dioxide (CO₂) system is the primary buffer in seawater which controls oceanic pH. Changes in the marine CO₂ system affect a number of processes such as metal speciation, mineral saturation states, auditory responses in fish, and primary productivity rates. Increased atmospheric concentrations of CO₂ from human activities (e.g. burning of fossil fuels, deforestation, and cement production) has led to a global decrease in surface ocean pH termed anthropogenic ocean acidification. One particular concern in response to increased oceanic CO₂ is a substantial decrease in the calcium carbonate (CaCO₃) saturation states, Ω …

The Effect Of Stealth Advertising In Newscasts On Viewers' Recall, Fany Georgieva

USF Tampa Graduate Theses and Dissertations

Product placement, also referred to as stealth advertising, raises important questions when it comes to television because a far larger audience views television than movies. Product placement in newscasts is even more controversial. Television news is expected to be free of persuasive attempts and provide citizens with basic information that is of public importance. Yet, product placement blurs the line between journalism and commercial promotion, thus destroying the integrity of the news.

Product placement in newscasts raises ethical questions about the effect it has on viewers, provided that they do not realize that they are presented with commercials, framed as …

Teacher Perspectives On The Instructional Impact Of The Florida Alternate Assessment, Katherine Hawley

USF Tampa Graduate Theses and Dissertations

This study examined special education teachers' perspectives of the instructional impact of the Florida Alternate Assessment (FAA) for students with significant cognitive disabilities. Through purposeful sampling, six special education teachers who serve students with significant cognitive disabilities and had experience administering the FAA were identified. Interviews posed questions about how they used the FAA to impact their instructional decision-making, how the FAA has influenced how the development of Individualized Education Program (IEP) goals, and how the FAA impacted how they defined access to the general education curriculum. The interviews, along with IEP artifacts, and a research journal formed the research …

A Latent Mixture Approach To Modeling Zero-Inflated Bivariate Ordinal Data, Rajendra Kadel

USF Tampa Graduate Theses and Dissertations

Multivariate ordinal response data, such as severity of pain, degree of disability, and satisfaction with a healthcare provider, are prevalent in many areas of research including public health, biomedical, and social science research. Ignoring the multivariate features of the response variables, that is, by not taking the correlation between the errors across models into account, may lead to substantially biased estimates and inference. In addition, such multivariate ordinal outcomes frequently exhibit a high percentage of zeros (zero inflation) at the lower end of the ordinal scales, as compared to what is expected under a multivariate ordinal distribution. Thus, zero inflation …

Biomechanics Of Patient Handling Slings Associated With Spinal Cord Injuries, Julie Kahn

USF Tampa Graduate Theses and Dissertations

Pressure ulcers and related skin integrity threats are a significant problem in current transfer/transport systems used for spinal cord injury patients. To understand this problem twenty-three different slings with varying type, material, and features were analyzed in hopes to identify at-risk areas for skin integrity threats such as pressure ulcers. Population samples included non-disabled (otherwise referred to as "healthy") volunteers as well as SCI patients from the James A. Haley Veterans Hospital. High resolution pressure interface mapping was utilized to directly measure the interface pressures between the patient and sling interface. Overall results provide relevant feedback on the systems used …